COMPUTER HARDWARE
COMPUTER MEMORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The data from the memory is not saved
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The data from memory is saved onto flash memory
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The data from the memory is saved onto the hard disk
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The data from the memory is saved onto ROM
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Detailed explanation-1: -What is computer RAM? RAM is volatile memory, which means that the information temporarily stored in the module is erased when you restart or shut down your computer. Because the information is stored electrically on transistors, when there is no electric current, the data disappears.
Detailed explanation-2: -The word dynamic refers to the need to constantly refresh the electrical charge in the memory cells. This happens hundreds of times per second, because the energy bleeds out of the capacitors in the cells that quickly. So it takes only a tiny fraction of a second for DRAM to fully erase after power off.
Detailed explanation-3: -Hard disks and SSDs are non-volatile, which means they don’t lose data when there’s no power. RAM does lose its data when power is cut. The power connection is what allows RAM to work as quickly as it does. There are also CDs, DVDs, memory cards, and USB devices.
Detailed explanation-4: -Note that RAM is different from storage: If you turn off your PC, the information in your RAM is gone, but the data saved in your long-term storage (SSD or HDD) is saved.